Our LG 42C3 OLED replaced a 2006 40" UHD. Our choices were limited due to its location in a built in cabinet. The new picture is fabulous - in day or night time. The colors are brilliant and the contrast is unbelievable. An added benefit is the expanded viewing angle. No comment on the audio as we also bought a soundbar. The only negative is our learning curve with all the menu options and the (newer) Magic remote. It may take us a while to settle into our personal preferences.
[This review was collected as part of a promotion.] Amazing picture. This is our first OLED TV and this one is awesome. Even the sound from what must be very small speakers is really good. We are becoming one with the remote as well. Just wish it was backlit. So far it has been a great "cord-cutting " TV experience.